Solar Builder

JAN-FEB 2019

Solar Builder focuses on the installation/construction of solar PV systems. We cover the latest PV technology (modules, mounting, inverters, storage, BOS) and equip installers/contractors with tips and tools to make informed purchasing decisions.

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Page 39 of 51

Module Buyer's Guide 7 Photovoltaic-aways We surveyed PV module manufacturers about the market in 2019, and here is what they had to say. Mono PERC power 1 Passivated Emitter Rear Cell (PERC) is a photovoltaic design that increases light capture efficiency by adding a passivation film at the rear end of the cell to capture scattered and reflected light. An obvious benefit of PERC technology is that it allows for high-power modules, and the more power a module produces, the more money that can be saved by reducing over- all BOS costs. Using high-power modules can mean fewer panels, less racking, wiring, combiner boxes and reduced labor hours. One step further, half-cut cells have reduced resistive losses, which makes them capable of boosting power output by another 5 to 15 W per module depending on the cell type. The shift to monocrystal- line solar modules is accelerating faster than expected, with mono PERC to wit- ness the largest market share increase. In 2017, half-cut cell solar panels took 11 per- cent of the global module capacity, and this share is expected to rise to around 35 per- cent by 2020.

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